How much 90 pounds of copper cost
1200 lbs. in copper
thousands
To calculate the amount of copper in 200 pounds of a substance that is 5.25% copper, you multiply the weight by the percentage. So, 200 pounds * 0.0525 (which is 5.25% as a decimal) = 10.5 pounds of copper.
In a piece weighing 200 pounds and containing 5.25% copper, there would be 10.5 pounds of copper (200 pounds x 0.0525).
15 pounds of copper weighs 15 pounds. Copper has a density of about 559 pounds per cubic foot, so 15 pounds would take up a volume of about 0.027 cubic feet.
150 pounds
Average 7,000 pounds
About $2.67 if it is clean.
For five pounds of pre-1992 Twopences, at current copper prices, you would do much better taking them to the bank.
5.25% of 200 pounds is 10.5 pounds. (200 x .0525) So, the 200 pound object would be composed of an alloy containing 10.5 pounds of copper.
4 pounds.